... , grinding and polishing of optical objects, magnet heads, HDD, gems and electroplated art TypesDiamond micron powder,synthetic diamond RVD ... 500/600Big size:1.2-2.4mmCertificationISO9001:2008 Certificate.company profileEstablished in 1990,Zhecheng Hongxiang Superhard Material Co., Ltd ... the high-tech new product, has been exhibited at Shang hai World Expo Private Enterprice Pavillion.Main businessOur ...